Pseudo-factitial dermatitis: a useful clinical and/or histopathological concept.

The concept of pseudo-factitial dermatitis can be defined as follows: any skin condition which, by its clinical or histopathological profile, can lead the clinician to an erroneous diagnosis of factitial dermatitis. Therefore, pseudo-factitial dermatitis does not exist as such; intellectually, it is of special interest for the practising dermatologist, in terms of differential diagnosis, either clinical or histopathological.